3 (also spline curve) Mathematics A continuous curve constructed so as to pass through a given set of points and have a certain number of continuous derivatives. Example sentences. 1  The data was therefore fit nonparametrically to a smooth curve using the Dierckx algorithm for cubic spline curve fitting.
Definition of Unearned Revenue in Accounting. Unearned revenue is the same thing as deferred revenue. In accounting, unearned revenue is a liability. It is a liability because even though a company has received payment from the customer, the money is potentially refundable and thus not yet recognized as revenue.
Unearned fees show up under liabilities. Liabilities are obligations (to pay cash, render services, or deliver goods) to other parties. When customer pay in advance, the firm has an obligation to the customer. When the firm does deliver the products/render the services, the liability unearned revenues is reduced and sales are recognized.